Tungsten Carbide Rod, Tungsten Carbide End Mill, Tungsten Carbide Drill manufacturer / supplier in China, offering Yk05 Yg11c CIR100mm High Performance Down The Low Pressure DTH Bits, Yg8c CIR110-110mm DTH Bits Used in Water Well Drilling and Mine Drilling, DTH Drill Bit/ Hammer High Performance CIR90 for Water Well Drilling Tools and so on.